It's funny, but I don't know that I have ever seen or heard this addressed in terms of digital photography. As a result, in a rather theoretical project I am working on, I have been a bit stymied trying to figure out the magnification of a final, sized image(print). My results, depending on what factors are used, have been in the millions, hundreds of thousands or tens of thousands of times, all on the same image at the same size. With film, we just used the film size. A piece of 35mm film enlarged to 8x12 was considered either 8x linear or 64 times (area) enlargement. With digital is it more complicated? Two sensors of the same size, say for this example FF or 24x36mm, can be 10mp or 20mp for instance. All other things being equal, do you consider an 8x12 print from either the same level of magnification or is there a difference? Has anyone ever heard this issue discussed or do you have any thoughts on this?